AOL - XBox 360 and unable to play games against

Asking for a friend who has XP machine on AOL Broadband with a Thompson SpeedTouch 556? or similar version router connected by Lan. they have 2 Xbox360s one connecting wireless and other via Ethernet to router.

Problem is non of them will make connection with friends on the XBox360 to games against.

All I can suggest is check the AOL is working. At the time when on phone he hadn't checked but in advance when he does

I thought of somesort of Firewall issue within the AOL SpeedTouch ST556 v6 router but not sure.

I had a similar problem with my wii,to get past the problem I inputted my wii mac number into the router, which sorted the problem.

To find the MAC address of your Xbox 360:

Go to the "System" area of the Xbox Dashboard; Select "Network Settings"; Select "Edit Settings."; Select "Additional Settings"; Select "Advanced Settings"; At the bottom of this screen you'll see a heading called "Wired MAC Address," which is your MAC address.

Our PS3 was able to browse the internet but not connect to the Playstation network. Although not an Xbox we are on AOL.In our router settings we turned off/disabled upnp and connection resumed as normal.Perhaps something to try if nothing else works.You can always turn it back on again.

As far as I know every gadget has a mac number if it connects to the internet, its just a question of how to find it. Google is your friend here, just put the name of gadget and find mac address or something similar, and chances are the info will be there.